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wrapper class

gudii9
gudii9 asked
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Last Modified: 2012-05-11
>>Which of the following statements are true?

1) The Integer class has a String and an int constructor
2) The Integer has a floatValue() method
3) The wrapper classes are contained in the java.lang.Math package
4) The Double class has constructors for type double and float


Answer to Question 1

1) The Integer class has a String and an int constructor
2) The Integer has a floatValue() method
4) The Double class has constructors for type double and float

i was going through above question from following link

http://www.jchq.net/certkey/0803certkey.htm

It is not clear to me.

Can Integer class can take String argument.

Any ideas, resources, links, sample code highly appreciated. thanks in advance.
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